BIM-based engineering quantity extraction method and system

Abstract

This invention provides a BIM-based method and system for extracting engineering quantities, belonging to the field of industrial plant technology. Addressing the existing difficulty in predicting engineering quantities, it utilizes a BIM platform to import structural design models and generate building models, ultimately achieving accurate acquisition of engineering quantities. This enables the effective transmission and utilization of existing structural design model information, reducing the workload of remodeling. The goal is to obtain precise engineering quantities, thereby providing accurate references for bidding or construction processes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial plant design, in particular, to a BIM-based engineering quantity extraction method and system. BACKGROUND

[0002] Construction drawings are two-dimensional, and when manually estimating engineering quantities using construction drawings, the CAD drawings need to be refined nodes to determine the boundary lines between nodes; then, according to the construction type of each node, the engineering quantities are estimated, and finally, the engineering quantities of all nodes are combined to obtain the total engineering quantities. However, there is often a large error between the total engineering quantities of the construction drawings and the actual total engineering quantities, which cannot provide accurate reference for bidding and construction links.

[0003] In the prior art, two-dimensional drawings are "translated" using Revit software, but construction units often cannot understand the design intent, resulting in a large deviation between the model obtained by translation and the actual model. Normal program modeling requires a long cycle and generates a large amount of work.

[0004] Therefore, there is an urgent need for a BIM-based engineering quantity extraction method that accurately reflects engineering quantities. SUMMARY

[0005] The purpose of the present application is to provide a BIM-based engineering quantity extraction method and system, which accurately obtains the engineering quantities of the industrial plant according to the structural design model of the industrial plant.

[0006] A BIM-based engineering quantity extraction method, comprising the following steps: converting the structural design model of the industrial plant into a model intermediate file;

[0007] Reading the model intermediate file using the Revit system and inputting the structural design model of the industrial plant into the Revit system;

[0008] Proofreading the read model intermediate file; wherein the proofreading includes proofreading the accuracy of the built-in information of the components and proofreading the completeness of the built-in information of the components;

[0009] Obtaining the building model of the industrial plant according to the proofread structural design model of the industrial plant;

[0010] Creating doors and windows and creating facades for the obtained building model of the industrial plant to obtain the building model of the industrial plant with created doors and windows and facades;

[0011] Obtaining the engineering quantities of the building model of the industrial plant with created doors and windows and facades.

[0012] Further preferably, after proofreading the read model intermediate file, the method further comprises,

[0013] The structural design model of the industrial plant in the Revit system is checked for inter-relationship between components.

[0014] Further preferably, the building model of the industrial plant is created with doors and windows and with an external facade, and the standard for the building model of the industrial plant created with doors and windows and with an external facade is that the building model of the industrial plant reaches the LOD200 level.

[0015] The building model of the industrial plant reaches the LOD200 level.

[0016] Further preferably, in the step of converting the structural design model of the industrial plant into a model intermediate file, the model intermediate file is an MDB file; and the model intermediate file is read by a plug-in of the Revit system.

[0017] Further preferably, the structural design model of the industrial plant is obtained by the PKPM system.

[0018] Further preferably, the PKPM system is provided with an interactive port with the Revit system.

[0019] Further preferably, the component built-in information includes elevation of the structural component, section information of the structural component, and material information of the structural component.

[0020] The present application also protects a BIM-based quantity extraction system, which comprises,

[0021] A reading unit is configured to convert the structural design model of the industrial plant into a model intermediate file; the model intermediate file is read by the Revit system, and the structural design model of the industrial plant is input into the Revit system;

[0022] A proofreading unit is configured to proofread the read model intermediate file; wherein the proofreading includes proofreading of accuracy of the component built-in information and proofreading of completeness of the component built-in information;

[0023] A building model obtaining unit is configured to obtain a building model of the industrial plant according to the proofread structural design model of the industrial plant; the building model of the industrial plant is created with doors and windows and with an external facade, and the building model of the industrial plant created with doors and windows and with an external facade is obtained.

[0024] A quantity obtaining unit is configured to obtain quantities of the building model of the industrial plant created with doors and windows and with an external facade.

[0025] Further preferably, the proofreading unit comprises,

[0026] The proofreading module is used for proofreading the read model intermediate file, wherein the proofreading includes proofreading the accuracy of the built-in information of the component and proofreading the integrity of the built-in information of the component.

[0027] The mutual relationship checking module is used for checking the mutual relationship between components in the structural design model of the industrial plant in the Revit system.

[0028] Further, preferably, the built-in information of the component includes the elevation of the structural component, the cross-section information of the structural component and the material information of the structural component.

[0029] As described above, the BIM-based engineering quantity extraction method and system can finally realize accurate engineering quantity acquisition by using the BIM platform to import the structural design model and generate the building model, and can realize effective transmission and utilization of the existing structural design model information, reduce the workload of re-modeling, achieve the purpose of obtaining accurate engineering quantity, and further provide accurate reference for the bidding or construction link. BRIEF DESCRIPTION OF DRAWINGS

[0030] Other objects and advantages of the present application can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0031] Figure 1 FIG. 1 is a flow diagram of a BIM-based engineering quantity extraction method according to an embodiment of the present application;

[0032] Figure 2 FIG. 2 is a structural diagram of a BIM-based engineering quantity extraction system according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It can be apparent, however, that such embodiment(s) can be practiced without using all the specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0034] The essence of the application of BIM technology is mainly in the transmission of information, the design department in the information chain is the beginning of BIM application, therefore, it is necessary to study the model information transmission starting from the design department. The field of BIM model transmission in industrial projects in China is still in the embryonic stage. Industrial buildings are usually relatively simple in shape compared to civil buildings, and the difference between the engineering quantity of the building structure model at the design stage and the actual engineering quantity at the construction stage is relatively small. The BIM-based engineering quantity extraction method of the present application uses the finite element structure model output by the structure calculation software to Revit software, establishes a building model based on the structure model according to the building design requirements in Revit software, and finally extracts the engineering quantity of the finally completed model through Revit software, providing more accurate data support for bidding.

[0035] Embodiment 1

[0036] The various embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] Figure 1 is a flowchart of the BIM-based engineering quantity extraction method of the embodiment of the present application, as shown in Figure 1 The BIM-based engineering quantity extraction includes steps S110-S160.

[0038] S110, convert the structure design model of the industrial plant into an intermediate model file.

[0039] It needs to be explained that the building information model (Building Information Modeling, BIM) is based on the relevant information data of the building engineering project as the model basis, and the building model is established, and the real information possessed by the building is simulated by digital information. It has eight characteristics of information completeness, information correlation, information consistency, visualization, coordination, simulation, optimization and mapping. Revit is the name of a series of software of Autodesk company. Revit series software is built for building information model (BIM), which can help architects design, build and maintain better quality and higher energy efficiency buildings. Revit is one of the most widely used software in China's building industry BIM system. Autodesk Revit provides tools to support architectural design, MEP engineering design and structural engineering. PKPM is an engineering management software developed by China Academy of Building Research. China Academy of Building Research is one of the earliest units in the development and application of computer technology in the construction industry. It relies on national industry research and development center, standard compilation unit and engineering quality inspection center, and has strong technical force. The main research and development fields of the software institute are concentrated in architectural design CAD software, green building and energy saving design software, engineering cost analysis software, construction technology and construction project management system, graphics support platform, enterprise and project information management system, etc. And created PKPM, ABD and other well-known national software brands. PKPM has no clear Chinese name, generally just read the English letters of PKPM. The naming is as follows: the earliest this software only has two modules, PK (shelving frame design), PMCAD (plane auxiliary design), so it is called PKPM.

[0040] In the step of converting the structural design model of the industrial plant into a model intermediate file, the model intermediate file is an MDB file; the model intermediate file is read through a plug-in of the Revit system. The structural design model of the industrial plant is obtained through the PKPM system. The PKPM system is provided with an interactive port with the Revit system. Through the interactive port with the Revit system provided in the PKPM system, the structural design model information of the industrial plant is effectively transmitted and utilized, and the design party and the construction party open up the fast lane, ending the "reproduction" form, and formally opening up the "forward design" form.

[0041] S120, reading the model intermediate file by using the Revit system, and inputting the structural design model of the industrial plant into the Revit system.

[0042] S130, proofreading the read model intermediate file; wherein the proofreading includes proofreading the accuracy of the built-in information of the component and proofreading the integrity of the built-in information of the component.

[0043] After proofreading the read model intermediate file, the structural design model of the industrial plant in the Revit system is also checked for inter-component relationships. The component built-in information includes the elevation of the structural component, the cross-sectional information of the structural component, and the material information of the structural component.

[0044] That is, the Revit system is used to read the model intermediate file in MDB format, and then the structural design model of the industrial plant is input into the Revit system; and the Revit system is used to perform information review on the input structural design model of the industrial plant. The information review includes two links, one is proofreading, and the other is relationship checking. The main content of proofreading is the accuracy of the built-in information of the component and the completeness of the built-in information of the component. Through proofreading, it is confirmed that the structural design model of the industrial plant is imported without loss of components, the elevation, cross-sectional information and material information of the structural component are completely retained, and the labor input required for later model modification and information input is reduced. In addition, there are a small number of errors in the inter-relationship of the components in the structural design model of the industrial plant, which reflects the problem that different software must be imported and output at different stages. Through the relationship checking link, the number of such problems is very small, and only local preprocessing of the structural design model of the industrial plant is required, and the workload of modifying the model is negligible compared with the workload of re-modeling.

[0045] S140, according to the proofread structural design model of the industrial plant, obtaining the building model of the industrial plant; creating doors and windows and creating an external facade on the obtained building model of the industrial plant to obtain the building model of the industrial plant with created doors and windows and an external facade.

[0046] Specifically, the actual construction quantity of the building needs to be extracted by using the good interactivity and powerful calculation kernel of the Revit software, therefore, it is required to accurately input the material information of the main components in the structural design model of the industrial plant, and this step needs to create a building model based on the structural model.

[0047] It should be noted that the standard for creating doors and windows and creating an external facade on the obtained building model of the industrial plant to obtain the building model of the industrial plant with created doors and windows and an external facade is that the building model of the industrial plant reaches LOD200 level. That is, the doors and windows and the external facade of the model need to be created finally to ensure that the final model is consistent with the building design, and the final delivery model can reach LOD200 level, so that the downstream units of the information chain can obtain accurate and sufficient information.

[0048] S150, obtaining the construction quantity of the building model of the industrial plant with created doors and windows and an external facade.

[0049] In the specific implementation process, the engineering quantity can be obtained according to the specific construction site, such as the inner wall and the outer wall, the ceiling, the floor, the stairs or the site, etc. Through data transmission of the structure software and the modeling software, the engineering quantity of the building can be quickly and accurately determined.

[0050] The BIM-based engineering quantity extraction method can realize accurate engineering quantity acquisition, effective transmission and utilization of existing structure design model information, reduction of the workload of re-modeling, and accurate engineering quantity acquisition, thereby providing accurate reference for the bidding and construction links.

[0051] The application also protects a BIM-based engineering quantity extraction system 200, which comprises,

[0052] The reading unit 210 is used for converting the structure design model of the industrial plant into a model intermediate file; the model intermediate file is read by using the Revit system, and the structure design model of the industrial plant is input into the Revit system.

[0053] The proofreading unit 220 is used for proofreading the read model intermediate file; wherein the proofreading comprises proofreading the accuracy of the built-in information of the component and proofreading the integrity of the built-in information of the component.

[0054] The proofreading unit 220 comprises a proofreading module, which is used for proofreading the read model intermediate file; wherein the proofreading comprises proofreading the accuracy of the built-in information of the component and proofreading the integrity of the built-in information of the component; and a mutual relationship checking module, which is used for checking the mutual relationship between components in the structure design model of the industrial plant in the Revit system.

[0055] The built-in information of the component comprises the elevation of the structure component, the section information of the structure component and the material information of the structure component.

[0056] The building model acquisition unit 230 is used for acquiring the building model of the industrial plant according to the proofread structure design model of the industrial plant; the acquired building model of the industrial plant is used for creating doors and windows and creating an external facade, so as to obtain the building model of the industrial plant in which doors and windows and an external facade are created.

[0057] The engineering quantity acquisition unit 240 is used for acquiring the engineering quantity of the building model of the industrial plant in which doors and windows and an external facade are created.

[0058] To sum up, the BIM-based engineering quantity extraction method and system can solve the problem of difficult engineering quantity prediction, realize accurate engineering quantity acquisition by using the BIM platform to import the structural design model and generate the building model, realize effective transmission and utilization of the existing structural design model information, reduce the workload of re-modeling, achieve the purpose of obtaining accurate engineering quantity, and provide accurate reference for the bidding or construction links.

[0059] However, those skilled in the art should understand that the BIM-based engineering quantity extraction provided by the present application can be variously improved without departing from the content of the present application. Therefore, the protection scope of the present application should be determined by the content of the appended claims.

Claims

1. A BIM-based quantities extraction method, characterized by, The method comprises: converting a structural design model of an industrial plant into a model intermediate file; reading the model intermediate file by using a Revit system and inputting the structural design model of the industrial plant into the Revit system; checking the accuracy and completeness of the built-in information of the components in the structural design model of the industrial plant; obtaining a building model of the industrial plant according to the structural design model of the industrial plant after the checking; creating doors and windows and creating an external facade for the obtained building model of the industrial plant to obtain a building model of the industrial plant with created doors and windows and an external facade; obtaining the quantities of the building model of the industrial plant with created doors and windows and an external facade.

2. The BIM-based quantity extraction method according to claim 1, wherein, after the reading of the model intermediate file, the method further comprises, checking the mutual relationship between components in the structural design model of the industrial plant in the Revit system.

3. The BIM-based engineering quantity extraction method of claim 1, wherein, The standard for creating doors and windows and creating an external facade for the obtained building model of the industrial plant to obtain a building model of the industrial plant with created doors and windows and an external facade is that the building model of the industrial plant reaches LOD200. In the step of converting the structural design model of the industrial plant into a model intermediate file, the model intermediate file is an MDB file, and the model intermediate file is read by a plug-in of the Revit system.

4. The BIM-based engineering quantity extraction method of claim 1, wherein, 5. The BIM-based quantity extraction method according to claim 1, wherein, the structural design model of the industrial plant is obtained by a PKPM system. The PKPM system is provided with an interaction port with the Revit system.

6. The BIM-based engineering quantity extraction method of claim 5, wherein, The built-in information of the components includes the elevation of the structural components, the cross-sectional information of the structural components, and the material information of the structural components.

7. The BIM-based engineering quantity extraction method of claim 1, wherein, The system comprises, 8. A BIM-based quantities extraction system characterized by, a reading unit configured to convert a structural design model of an industrial plant into a model intermediate file; a reading unit configured to read the model intermediate file by using a Revit system and input the structural design model of the industrial plant into the Revit system; a checking unit configured to check the accuracy and completeness of the built-in information of the components in the structural design model of the industrial plant; a building model obtaining unit configured to obtain a building model of the industrial plant according to the structural design model of the industrial plant after the checking, and create doors and windows and create an external facade for the obtained building model of the industrial plant to obtain a building model of the industrial plant with created doors and windows and an external facade; a quantity obtaining unit configured to obtain the quantities of the building model of the industrial plant with created doors and windows and an external facade. The checking unit comprises, 9. The BIM-based engineering takeoff system of claim 8, wherein, a checking module configured to check the accuracy and completeness of the built-in information of the components in the structural design model of the industrial plant. ​ The interrelationship checking module is configured to check interrelationships among structural design models of industrial plants in the Revit system. 10.The BIM-based engineering quantity extraction system according to claim 8, wherein, The component built-in information includes elevation information of the structural component, section information of the structural component, and material information of the structural component.

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